Pen having a constant ink supplying device

Abstract

In a pen having a constant ink supplying device, the inner wall of the front end of the filler is installed sequentially with a barrel, a plug, a valve, a nib holder and a nib. The plug has a channel for feeding ink through the control of a ball. The front end of the plug is installed with a valve. A cavity for storing ink is installed between the valve and the plug. The nib is inserted into the nib holder. The front end of the filler has a support and an ink inlet. When writing, the nib is pressed and moves so that the support at the front end of the nib holder will push the valve and supply ink to the nib.

What is claimed is:  
     
       1. A pen having a constant ink supplying device, comprising a barrel, a plug, a valve, a nib holder, and a nib, wherein 
       the barrel is arranged to be filled with ink and contains a ball, said plug, valve, nib holder, and nib being sequentially installed in a front end of an inner wall of the barrel,  
       the plug is an annular body having a channel, said ball being arranged on one side of said plug to control flow of ink from said barrel to said channel, and an opposite side of the plug forming a cavity for storing ink that has passed through said channel from said barrel,  
       the valve is made of a flexible material and is firmly secured to a lower end of said plug, said valve including a central opening,  
       the nib holder is movably installed below the valve, an upper end of the nib holder including a support and an ink inlet, said support being arranged to engage said valve and prevent ink from flowing through said central opening to said ink inlet, and  
       the nib is an ink absorber installed within the nib holder in communication with the ink inlet of the nib holder, and  
       wherein when said barrel is shaken, said ball moves away from the channel allowing ink to flow from said barrel through said channel to said cavity, said ink being prevented from flowing to said nib by said valve,  
       wherein when said pen is in an upright position, said ball closes said channel and hydraulic pressure is applied to said nib holder, and  
       wherein during writing, pressure on said nib moves said support and causes said valve to open, thereby permitting said ink to flow from said cavity through said central opening and said ink inlet to said nib.  
     
     
       2. The pen having a constant ink supplying device as claimed in  claim 1 , wherein a front end of a pen body of said barrel engages a cap. 
     
     
       3. The pen having a constant ink supplying device as claimed in  claim 2 , wherein a rear end of the pen body is sealed. 
     
     
       4. The pen having a constant ink supplying device as claimed in  claim 1 , wherein a front end of the nib includes a step-like ink feeder, said ink feeder being inserted into and retained by the support. 
     
     
       5. The pen having a constant ink supplying device as claimed in  claim 1 , wherein the plug includes an annular body having a longitudinal H-shaped cross-section, a middle portion of the annular body including a spacer. 
     
     
       6. The pen having a constant ink supplying device as claimed in  claim 1 , wherein said channel of the plug has a bowl-shaped depression at said one side for receiving said ball. 
     
     
       7. The pen having a constant ink supplying device as claimed in  claim 1 , wherein said valve is made of a flexible material selected from the group consisting of silicon glue and rubber. 
     
     
       8. The pen having a constant ink supplying device as claimed in  claim 1 , wherein said support is step-shaped. 
     
     
       9. The pen having a constant ink supplying device as claimed in  claim 1 , wherein an engaging inner wall of the nib holder that engages the nib includes a plurality of ribs arranged to retain the nib in the nib holder. 
     
     
       10. The pen having a constant ink supplying device as claimed in  claim 1 , wherein a front end tube wall of the barrel includes projections, and wherein an outer wall of the nib holder includes an annular rib, said projections and annular rib cooperating to retain said nib holder within said barrel. 
     
     
       11. The pen having a constant ink supplying device as claimed in  claim 10 , wherein a slight gap is present between said annular rib and the tube wall of the barrel so that external air enters the ink feeding device through the gap. 
     
     
       12. The pen having a constant ink supplying device as claimed in  claim 1 , wherein said support extends through said channel to engage said ball and maintain a continuous flow of ink to the nib.